Hoisting device



Sept. 15, 1931. N. w. KYLE 1,823,833

HOISTING DEVI GE Filed Sept. 10, 1928 5 Sheets-Sheet l HUH] mVENToR' NLcholasVV. Kyle sept. 15, 1931.Y N W KYLE 1,323,833

HOISTING DEVICE Nicholas W. Kyle Sept. l5, 1931. N. w. KYLE 1,823,833

` HOISTING DEVICE Filed Sept. 10, 1928 5 Sheets-Sheet C5 INVENTGR Nicholas VV. Kye

Patented Sept. 15, 19,31

HoIsTING DEVTCE Application iled September 10, A1928. Serial No. 305,047.

This invention relates to improvements in a hoisting device which is well adapted for use on a dump body of an automobile truck,

and will be described as such in this specification. It may, however, be very well adapted f in numerous other ways where a hoist of this description is used.k d

The object of the invention is to provide a lifting device leg means of two liftingy jacks each having four toggle levers which unfold in hoistingthetruck body, and fold again around the'operating shaft when the truck body is lowered to its natural position Vand thus lock the body firmly in this posi-kv tion.

A further object is to have a device of the kind described that may be located underneath the front end ofthe truck body where it will have direct, quick, easy, `and 'well Y balanced lift, and will be protected from mud, sand, and ice.

A still further object is to provide for either hand operation or power operation from the truck engine, and a ratchet device to hold the truck body at any desired angle.

With these and other objects in view, as will appear as the description proceeds, the invention consists in the novel construction and arrangement of parts as hereinafter more the accompanying drawings forming a part of this present application and in which:

Fig. 1 is a perspective view of my invention as applied to a dump truck body.

Fig. 2 issa plan view of one of thev folding hoist acks.

Fig. 3 is a side elevation of the same.

Fig. 4 is across-section on line A-A of,

Fig. 3.

Fig. 5 is a cro-ss-section on lineB-B of Fig. 3. y

Fig. 6 shows the hoist jack fully extended.

Fig. 7 shows the hoist j ackpartially folded.

Fig. 8 shows the hoist jack completely folded with the truck body innatural position.

Referring more in detail tothe drawings in which similar reference characters designate corresponding part-s throughout the several views it will be seen that the invenycomprising a series of toggle levers desig- `tending boss 11 on the lower end. y (made in two sections and clamped together lceptacles for the, boss 11, and theother end andl clamped together by the bolts 14 and is likewise provided vwith receptacles for .the

:15. Toggle lever F is also made in two specifically set forth, claimed and shown in U shaped recess 22 for the pins 18 and 19 extend through the joint from the locking PATENT OFFICE tion consists ofA apair of folding hoist jacks nated hereafter as C, D, E, and F. As these jacks are identical in construction it Y- will suffice to'describe one only.

The toggle lever C is secured to the under structure of the truck body by a pin through the orifice 10 and is pivotally hinged to the toggle lever D by an outwardly ex-V by the bolts 12, one end is provided with rehas an inwardly projecting boss 13 onto which connection is made tothe toggle lever.E. Y This toggle lever E is made in two parts boss13 and has an outwardly extending boss d parts and clamped together bythe bolt 16. Receptacles for the boss 15 are provided at one end and orices 17 provided at the lower end for a pin 18 upon which they hoist is pivoted to the operating mechanism. Said pin 18 and a similar pin 1,9 are securedrat one` endto the gear wheel 20 and'at the other end toy a. member 21 mounted onthe main shaft. In each of the joints of the toggle levers is a upon which the toggle levers fold. When the pins1`8 and 19 are partially in place they make contact with the members 23, which arm 24, pushing: said member 23outwards thereby releasing the locking device and permitting-the .toggle levers to fold. This locking `device is made by protrusionsv'25 on the locking arms 24,-and the recesses 26 in the joints. The locking arms are held in place by springs 27 on'v the bolts 28. The locking device on toggle lever F is of slightly different construction but is numbered similarly to simplify the explanation. y

Thejacks. as previously mentioned are pivoted to the vgear wheels 20 which are' mounted on a shaft 30 having its bearings 31 onthe chassis frame 32. The drive as shown` isfor hand operation., The crank 33 being ofthe folding-'type is keyed to a shaft 34 100 mounted in the frame and the bearing 36 on the chassis frame 32. `At its inner end is keyed a small gear wheel 37 which engages a larger gear wheel 38 keyed to a counter-shaft 39. Said counter shaft is mounted in the bearings il() en the chassisy frame 32. Keyed to this shaft 39 are twosmall gears {l} designed to engage the gears 20.

The ratchet locking devicer issecnred to the frame 35, and consists of a double pawl 42 pivoted to the trame 35 and atoothedratehet wheel l?) keyed to the shaft 34. rllhis de- -vice will operate in either direction byniov-4 struction, combination and arrangement or"V co-operating elements may be resorted t0 within the scope of what is claimed without :departing vfrom the spirit cf the invention.

`That I claim l I .-1. InV ahoisting deviceioflthe character de# scribed the combination of a support, atilt- Yablemember, a rotor mounted onlsaid supin extended relation and pins extending from said arms into said slots, adapted to be en'- gaged by the pins on said rotor when the toggle levers are wound thereon, whereby the locking arms are automatically released.

3. In a hoistingr device of the character described the combination of a support, a tiltable member, a rotor mounted on said support and including a pair of' diametrically opposed pins spaced equidistantly from the axis thereof, agseries of toggle levers hinged together end t0 end, the terminal levers being respectively pivoted at their outer endsto one of said rotor pins and the tiltable member, said hinged points between the leversl having slots, the distance between the slots of each joint beingV equal tothe distance between the pins onsaid rotor, whereby the slots receive and engage the pins onthe rotor when the levers are wound upon the` rotor, spring actuated locking-` arms for holding said toggle levers in extended relation and members extending from said arms into said slots adapted to be engaged by the pins on said rotorwhereby the arms are autom'atically released to permit winding ofthef toggle levers on the rotor.

In testimony whereofI ailix my signature. NICHOLAS W. IQYVI'JF.. I

port and including a pair otdiamet'rically Y opposed pins spaced'equidistantly from Ather axis thereof, a series of toggle levers hinged together end to end,the terminal levers being respectively pivoted at their outer ends to one of said rotor pins and the tiltable member, vsaid hinged points between the levers having slots, the distance between the slots of each joint being equal to the distance between the pins on said rotor, whereby the slots receive and engage the pins on the rotor when thelevers are wound upon the rotor, locking arms for holding said togglelevers in extended relation and means associatedwith said locking arms adapted to be engaged by the pins onV saidrotor to release said locking arms, so that VtheV toggle levers maybe wound upon the rotor.

2. In a hoisting devicefof thecharacter de scribed the combinationL of avsvupport, aftiltable member, a. rotorr vmounted onsaid sup` port, and including la pair of diametrically opposedlpins spacedenuidistantly from the axis thereof; a series of toggle levers hinged together end to end7 the terminal Alevers being respectively pivoted at their outerV ends to one of said rotor pinsand the tiltable member, said hinged points Abetween the levers having slots, the distance' between the `slots vof each joint beingv equal to the distance between the pins en saidrotor, whereby the slots receive and engage the pins on the rotor when the levers are wound Vupon the rotor,

locking arms for holding said toggle levers 

